Katsh, who was born in Indura, Poland, was the son of Reuben Katz, later chief rabbi of Petah Tikvah.In 1967, he was elected president of Dropsie College (later University) . During visits to the Soviet Union, Hungary, and Poland in 1954 and 1958 he obtained microfilms of Hebrew manuscripts in Leningrad and Moscow.He published a number of essays on Hebrew and Jewish studies in U. S. Universities.
In 1957 he founded the National Association of Professors of Hebrew in American Universities.

Two years later, in 1949, Rabbi Reuben Katz became the spiritual leader, where he also would remain for the next forty years, and the stage was set.

Rabbi Reuben M. Katz and Cantor Harry Altman

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"My earliest recollections are seeing, what I term the real 'Dynamic Duo', Rabbi Reuben M. Katz and Cantor Harry Altman conducting their service with precision, with intensity and with devotion through their combination of cantorial chants and rabbinical preaching.